Chelsea Manning, who leaked Army documents and is serving 35 years, will be released in May after President Obama commuted her sentence. (AP)

"OK? Whatevs" she tweeted with a link to the music video for Jay Z's 'Dirt Off Your Shoulder."

The tweet came just a day after Manning penned a scathing column for the Guardian arguing that Obama compromised with his adversaries too much and thusly wasn't the "strong and unapologetic progressive" leader many liberals had hoped he'd be.

"The one simple lesson to draw from President Obama's legacy: do not start off with a compromise. They won't meet you in the middle," she wrote. "Instead, what we need is an unapologetic progressive leader."

During his final days in office, Obama commuted Manning's prison sentence. The former private — who was sentenced to 35 years in a military prison in 2013 for leaking classified information to whistleblowing site WikiLeaks — will be released in May following the commutation.

Former President Barack Obama commuted Manning's prison term before he left office. (ERIK S. LESSER/EPA)

Her scornful op-ed marked a complete change in tone toward Obama.

"Thank you @BarackObama for giving me a chance," Manning tweeted last week alongside a smiling emoji with a tear of joy.

While her column is deeply critical of Obama and his legacy, Manning did not directly call Obama a "weak leader," as Trump suggested. She pointed out that Obama's opponents called him weak, and she criticized him for attempting to compromise with rivals who mocked him — but she didn't directly use the term against him.

"When it came to foreign policy, even though he was only carrying out the expanding national security policies of the previous administration, they would ceaselessly criticize him for being too weak, or too soft or too sympathetic," she wrote. "After months of comprise on his end, they never cooperated a single time."

Trump's tweet came just 14 minutes after a Fox News broadcast used the term "ungrateful traitor" when covering Manning's column, CNN's Brian Stelter pointed out.